DTC P2008
Diagnostic Instructions
DTC Descriptor
DTC P2008 00: Inlet Manifold Runner Control
Valve Control Circuit Malfunction
Diagnostic Fault Information
Circuit
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Short to Ground
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Open/High Resistance
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Short to Voltage
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Signal Performance
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Ignition
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P2008 00
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P2008 00
|
-
|
-
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Control
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P2009 00
|
P2008 00
|
P2010 00
|
P200A 00
|
Circuit/System Description
The position of the swirl flaps is controlled by the engine
control module (ECM). The ECM controls the inlet manifold runner
control solenoid valve to create a swirl in the combustion chamber
to get a homogeneous diesel air mixture. The ECM will vary the
inlet manifold runner control solenoid valve referring to the
barometric pressure and the mass air flow. The ECM uses a pulse
width modulation on the control circuit to control the inlet
manifold runner control solenoid valve.
Conditions for Running the DTC
Engine is running.
Conditions for Setting the DTC
The ECM detects an open circuit for more than 1 s.
Action Taken When the DTC Sets
DTCs P2008 is a Type A DTC.
Conditions for Clearing the DTC
DTCs P2008 is a Type A DTC.
Reference Information
Schematic Reference
Engine Controls Schematics
Connector End View Reference
Component Connector End Views
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- Ignition ON, command the Intake Manifold Runner ON and
OFF with a scan tool. Observe the scan tool Intake Manifold Runner
Control Valve Feedback Signal parameter.
- Operate the vehicle within the Conditions for Running
the DTC to verify the DTC does not reset. You may also operate the
vehicle within the conditions that you observed from the Freeze
Frame/Failure Records data.
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the
Q21 Inlet Manifold Runner Control Solenoid Valve.
- Ignition ON, connect a test lamp between the ignition
circuit terminal 6 and ground.
⇒ |
If the test lamp is OFF, test the ignition circuit
for a short to ground or an open/high resistance. |
- Connect a test lamp between the control circuit
terminal 1 and the ignition circuit terminal 6.
- Command the Inlet Manifold Runner 95% to 5% and back
with a scan tool. The test lamp should turn ON and OFF when
changing between the commanded states.
⇒ |
If the test lamp is always ON, test the control
circuit for a short to ground or an open/high resistance. If the
circuit tests normal, replace the K20 Engine Control
Module. |
⇒ |
If the test lamp is always OFF, test the control
circuit for a short to voltage. If the circuit tests normal,
replace the K20 Engine Control Module. |
- If all circuits test normal, test or replace the
Q21 Intake Manifold Runner Control Solenoid Valve.
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
Control Module References for ECM replacement, setup and
programming
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